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Q) I m, Q 14!!17 Patented February 23 1904.

FITZ WILLIAIWI SARGENT, OF MAHWAH, NEW JERSEY, ASSIGNOR TO AMERICANBRAKE SHOE & FOUNDRY COMPANY,

OF MAHWAH,

NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

SPECIFICATION forming part of Letters Patent No. 753,004, dated February23, 1904. Application filed December 16, 1903. Serial No. 185,403. (Nomodel.)

Improvements in Brake-Shoes, of which the following is a specification.

My invention relates to the wearing blocks 'upon railway brakes andparticularly to brake shoes designed for engine driving wheels such asare usually made of combination metal, and to means for strengtheningthe same and to improvements in the attaching means therefor.

The objects of the invention are to provide in a brake shoe of the typewhich wears upon the wheel at the point where the rail does not wear, asuperior combination of different densities of metal, to provide asuperior strengthening back for the shoe, and an improved means forattaching the brake shoe to the brake head. These objects with otheradvantages which will hereinafter appear, I attain by means of theconstruction illustrated in preferred form in the accompanying drawing,wherein Figure 1 is a side elevation of the preferred form of the shoe;

Figure 2 is a top plan View of the same;

Figure 3 is a cross section of the view taken on line (3) of Figure 2;

Figure 4 is a cross section of a modified form of the shoe taken on line(4) in Figure 6;

Figure 5 is a longitudinal section of such modified form of shoe;

Figure 6 is a top plan view of the same, and

Figure '2' is an under plan view of the modified form of the shoe,showing the steel inserts placed in the shoe.

In making brake shoes for engine drivers it is known to be desirable toform a recess in the face of the same so as to prevent the shoe fromwearing unnecessarily upon that part of the wheel which takes the wearof the rail.

It is also found advisable to combine in the wearing sole a soft castmetal and also a hard steel insert to add to the durability of thewheel. In such shoes there is great difficulty in securing a shoe ofsufficient strength to withstand the rough usage, on account of atendency to crack, and to overcome this trouble I provide the shoepreferably with a steel backing and also with malleable metal means forattaching the shoe to the brake head.

In the form shown in the first three Figures I provide the body of theshoe 15 with cast metal and cover the back with a malleable metal or asteel plate 7, which extends over the tread portion and'also aroun theflange portion of the shoe. It has the cut out portions on top as shownin Figure 2, and in the central opening is provided a projection for theseat of the brake shoe key, and over it I provide ametal strap 11 toform an attaching lug. The strap 11 is anchored in the cast metal of thebody 5 and extends also under the edges of the steel backing, as shownin Figure 3. In the face of the shoe I provide a series ofinserts 8preferably of crucible steel on the tread of the shoe, and also a seriesof inserts 8 along the throat or flange portion to engage the flange ofthe wheel. The arrangement of these blocks is similar to that shown inFigure 7. It will be understood of course, that the body of the shoe 5is cast upon the other portion so the entire mass is firmly boundtogether.

In the form shown in Figures 4 to 7, a body portion 5 is similarlyprovided/with inserts 8 along the tread and inserts 8 in the position tobear on the flange of the wheel, and also with the recess portion 13 asshown in Figures 7 and 3. The steel backing 7' extends over the treadportion and also over the flange portion 6, and is provided withinturned portions 9 to thoroughly anchor the backing in the cast metalof the body. For attaching these I preferably use at one end a roundmetal pin 14, which extends through the shoe and is provided with a slot15 for the purpose of receiving a key to hold the shoe upon the head. Atthe other end is provided a malleable metal hook 16 which is of the formshown in Figures 5 and 6, being embedded in the cast metal of the shoeand the under portion of the same extending underneath the steel backing7 as appears in Figure 5.

It will be seen from this construction that the face of the shoepresents a wearing surface only upon the outer tread and upon the flangeof the wheel, and that this wearing surface is composed alternately-ofthe soft cast metal and the hard steel inserts 8. To counterbalance thenecessary weakening of the shoe which is incidental to the insertion ofthe blocks 8 and 8, the back of the shoe is completely covered and boundtogether by means of the steel plate 7; while at the same time themalleable metal attaching means 11 in the one instance, or the hook 16in the other, is anchored underneath the steel back and therefore has afirm hold upon the cast metal and also upon the backing as well.

Having thus described my invention and illustrated its use, what I claimas new, and desire 'to secure by Letters Patent, is

1. A brake shoe comprising a cast metal body portion, a series of steelinserts on the face thereof disposed so as to wear on the outer edge andthe flange of the wheel only, a steel backing for the cast body coveringthe entire surface thereof and having its edges anchored in the metal ofthe body, and metallic attaching means anchored underneath the steelback, substantially as described.

2. A brake shoe comprising a body portion having a recess over the innertread portion l of the wheel, a series of hard metal inserts, a steelback, and a malleable metal attaching lug.

3. A brake shoe comprising a body portion having a recess over the innertread portion of the wheel, a series of hard metal inserts over theouter tread and flange of the wheel, a steel back, and a malleable metalattaching lug anchored beneath the steel back.

4:. In a brake shoe the combination of a cast metal body portion, amalleable metal backing anchored in the cast metal of the body, andattaching means comprising a malleable hook at one end and a malleablepost at the other, both of which are anchored underneath the steel back,substantially as described.

5. In a brake shoe the combination of a cast iron body having a recessover the inner tread of the wheel, a series of malleable metal insertsover the outer tread and the flange of the wheel, a malleable metalbacking, a malleable metal hook extending under the malleable metalbacking at one end, and at the other a malleable post extending throughthe shoe and having a shoulder underneath the malleable backing,substantially as described.

In testimony whereof I have hereunder signed my name in the presence ofthe two subscribed witnesses.

FITZ WILLIAM SARGENT.

Witnesses:

A. G. JACOBS, CHAS. F. HERLIHY.

